My first engine in my kr was a hapi. Crank broke at about 65 hrs. Prop left the plane. Funny feeling. Made it to a pasture.
Sent from my iPhone > On Apr 17, 2016, at 11:39 AM, svd via KRnet <krnet at list.krnet.org> wrote: > > Thanks for the suggestion of the Revmaster crank and prop hub Mark. > Why? Any other suggestions? Heads? > > It does seem a shame to rip apart the HAPI, but I keep getting ominous > opinions of its airworthiness. > > > > > >> On Apr 17, 2016, at 9:00 AM, krnet-request at list.krnet.org wrote: >> >> Send KRnet mailing list submissions to >> krnet at list.krnet.org >> >> To subscribe or unsubscribe via the World Wide Web, visit >> http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org >> or, via email, send a message with subject or body 'help' to >> krnet-request at list.krnet.org >> >> You can reach the person managing the list at >> krnet-owner at list.krnet.org >> >> When replying, please edit your Subject line so it is more specific >> than "Re: Contents of KRnet digest..." >> >> >> Today's Topics: >> >> 1. 94x82 vs 92x82 (svd) >> 2. Re: 94x82 vs 92x82 (Mark Langford) >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Sat, 16 Apr 2016 16:31:56 -0700 >> From: svd <osprey220 at yahoo.com> >> To: "krnet at list.krnet.org" <krnet at list.krnet.org> >> Subject: KR> 94x82 vs 92x82 >> Message-ID: <BF6418A0-E0FE-476C-834D-6E8D0FC63510 at yahoo.com> >> Content-Type: text/plain; charset=utf-8 >> >> >> Is there any downside to moving to the 94mm cylinders vs 92mm's? My son?s >> project currently has the 92x82 for 2180cc. I can move to 94x82 for about >> the same cost as sticking with 92x82 in an upcoming rebuild. >> >> I?ve read that the 94mm cylinders are preferred because they are thicker >> walled. >> >> I am considering a pretty serious rebuild of the HAPI engine that came with >> my son?s KR project. >> >> Specifically, we are intending to replace the crank and prop hub (with GP >> Top Bug and Force One), cylinder heads (with ?), alternator with GP, and >> cylinders with nikasil?s (not the LN Nikies). >> >> Since the case will have to be machined to accept the Force One prop hub, >> shouldn?t be too much more to machine for the 94?s. >> >> Cheers, >> Owen >> >> >> >> >> ------------------------------ >> >> Message: 2 >> Date: Sat, 16 Apr 2016 20:28:53 -0500 >> From: "Mark Langford" <ML at N56ML.com> >> To: "'KRnet'" <krnet at list.krnet.org> >> Subject: Re: KR> 94x82 vs 92x82 >> Message-ID: <6657B9D418D943CE96CBB3D7C757FBFD at BASE755> >> Content-Type: text/plain; charset="us-ascii" >> >> Owen wrote: >> >>>> Is there any downside to moving to the 94mm cylinders vs 92mm's? My son's >> project currently has the 92x82 for 2180cc. I can move to 94x82 for about >> the same cost as sticking with 92x82 in an upcoming rebuild.<< >> >> Several of us are running 94mm cylinders on the Corvair with no problems at >> all. You'll probably go through at least two sets of VW heads before you >> need to touch the pistons/cylinders. They are well proven. I put 550 hours >> on a set in N56ML and they still look great and have great compression. >> >> I've built two GPASC engines (and torn them both down several times for hub >> issues), and if I were going to build another VW, I'd use the Revmaster >> crank and prop hub setup instead. >> >> Mark Langford >> ML at N56ML.com >> http://www.n56ml.com >> >> >> >> >> >> ------------------------------ >> >> Subject: Digest Footer >> >> _______________________________________________ >> See KRnet list details at http://www.krnet.org/instructions.html >> KRnet mailing list >> KRnet at list.krnet.org >> http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org >> >> >> ------------------------------ >> >> End of KRnet Digest, Vol 4, Issue 100 >> ************************************* > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options
